Self-propel accessory
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United States of America Patent
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Nov 17, 2015
Grant Date -
Oct 23, 2014
app pub date -
Apr 22, 2013
filing date -
Apr 22, 2013
priority date (Note) -
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status (Latency Note)
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Abstract
A self-propel accessory provides an easily attachable optional drive function for a platform device. The platform device is supported by a device frame including a wheel at a rear end and a post at a front end. The self-propel accessory includes an accessory frame attachable to the device frame via a bracket, a driving wheel connected to the accessory frame, a motor operatively coupled with the driving wheel, and a handle connected to the accessory frame. The accessory frame is pivotable between a disengaged position and an engaged position, and a weight of the platform device biases the accessory frame toward the disengaged position.
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